DOUBLE-STAGE GAS TURBINE Russian patent published in 2000 - IPC

FIELD: high-temperature turbines for gas-turbine engines. SUBSTANCE: gas turbine has rotor with operating disks and two auxiliary disks in-between. Labyrinth seal ridges are provided on rims of intermediate disks. Rim of front intermediate disk has radial and axial ducts. Axial ducts are spaced apart through distance equal to their three to six diameters; relations of geometric dimensions of labyrinth seal ridges in radial sectional area are to be found from equations given in description of invention. Such design provides for augmented heat transfer within labyrinth seal in atmosphere of high-temperature gases. EFFECT: improved reliability of turbine. 5 dwg